.. _someos:
**********************************
Optional Operating System Services
**********************************
The modules described in this chapter provide interfaces to operating system
features that are available on selected operating systems only. The interfaces
are generally modeled after the Unix or C interfaces but they are available on
some other systems as well (e.g. Windows or NT). Here's an overview:
.. toctree::
select.rst
threading.rst
thread.rst
dummy_threading.rst
dummy_thread.rst
multiprocessing.rst
mmap.rst
readline.rst
rlcompleter.rst